Hey Stuart,

Just curious: how did you figure this out? What tools did you use and
what operations did you invoke? I tried analyzing basic heap dumps and
it only provided the "find nearest GC root" feature. I assume you used
something else?

Thanks,
Gili

On Nov 28, 11:00 am, "Stuart McCulloch" <[EMAIL PROTECTED]> wrote:
> Hi folks,
>
> I spent a bit of time hunting through heapdumps and I found out why Guice
> wasn't being cleanly unloaded:
>
>    http://code.google.com/p/google-collections/issues/detail?id=92#c6
>
> Unfortunately, I couldn't find a good way around some of these references
> and had to resort to reflection
> to clear some internal fields - so if anyone knows of better solutions, feel
> free to comment on that issue!
> (perhaps a public shutdown API for the google-collections Finalizer thread
> would actually be better?)
>
> Anyway, I've uploaded a new _unofficial_ snapshot in case anyone wants to
> test it themselves:
>
> http://peaberry.googlecode.com/svn/branches/spike/lib/build/google-gu...
>
> I also tagged the version stamp with peaberry to make clear this isn't a
> regular snapshot, just in case...
>
> This jar will now allow Guice to be cleanly undeployed... as long as there
> are no other leaks inside your
> web application ;)  I tested it on GlassFish v2 and it works - although GC
> can be slow to unload classes
> if you're not using much of your heap - but you can always force GC via
> jconsole, etc.
>
> PS. users of GlassFish v3 prelude may still see a leak because their
> web-container thread pool appears
> to have a bug where they don't clear the thread-context-classloader before
> returning threads to the pool
> which keeps the web-application around until that thread is re-used:
>
>    https://glassfish.dev.java.net/issues/show_bug.cgi?id=6082
>
> Have a good weekend!
>
> --
> Cheers, Stuart
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